Examples of Other Alerting Systems

Mexican Seismic Alert System (SASMEX)

SASMEX is an earthquake warning system used in various areas of Mexico. Part of this warning system involves  sending warnings through VHF stations in a similar manner the NOAA Weather Radio in the United States.

Test alerts are sent every three hours (as a Required Weekly Test).
The primary alert sent through this system are Earthquake Warnings (EQW).
Other alerts such as Hurricane Watch and Warning are being tested on this system.


J-Alert is an early warning system used in Japan. Alerts are relayed from satellite to the public via: loudspeaker, radio, TV, email, and cell phones. In addition to a warning signal, alerts are read in five languages: Japanese, English, Mandarin, Korean, and Portuguese (except for severe weather warnings).

Types of alerts relayed through J-Alert:
Earthquake Early Warnings
Tsunami Warnings
Volcano Alerts
Severe Weather Warnings
Other Special Emergencies

Emergency Alert Australia

Emergency Alert Australia is an emergency communications system used in Australia. Alerts can be sent to the public via phone, SMS, radio, and TV. Excluding landline phones, alerts begin with the Standard Emergency Warning Signal (SEWS) followed with important information regarding the event.

Common alerts using the EAA system include bushfire and tropical cyclone warnings. Other alerts that could be sent through this system include: floods, earthquakes, tsunamis, and terrorist attacks.

Emergency Warning Systems are used by many countries across the globe. The systems above are only a few examples of different warning systems designed to warn the public of impending danger.
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